C8051F124-TB Silicon Laboratories Inc, C8051F124-TB Datasheet - Page 33
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C8051F124-TB
Manufacturer Part Number
C8051F124-TB
Description
BOARD PROTOTYPING W/C8051F124
Manufacturer
Silicon Laboratories Inc
Specifications of C8051F124-TB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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1.6.
An on-board Programmable Counter/Timer Array (PCA) is included in addition to the five 16-bit general
purpose counter/timers. The PCA consists of a dedicated 16-bit counter/timer time base with 6 program-
mable capture/compare modules. The timebase is clocked from one of six sources: the system clock
divided by 12, the system clock divided by 4, Timer 0 overflow, an External Clock Input (ECI pin), the sys-
tem clock, or the external oscillator source divided by 8.
Each capture/compare module can be configured to operate in one of six modes: Edge-Triggered Capture,
Software Timer, High Speed Output, Frequency Output, 8-Bit Pulse Width Modulator, or 16-Bit Pulse Width
Modulator. The PCA Capture/Compare Module I/O and External Clock Input are routed to the MCU Port I/
O via the Digital Crossbar.
1.7.
Serial peripherals included on the devices are two Enhanced Full-Duplex UARTs, SPI Bus, and SMBus/
I2C. Each of the serial buses is fully implemented in hardware and makes extensive use of the CIP-51's
interrupts, thus requiring very little intervention by the CPU. The serial buses do not "share" resources
such as timers, interrupts, or Port I/O, so any or all of the serial buses may be used together with any other.
Programmable Counter Array
Serial Ports
Capture/Compare
Module 0
SYSCLK/12
Timer 0 Overflow
SYSCLK
External Clock/8
SYSCLK/4
ECI
Capture/Compare
Module 1
CLOCK
MUX
PCA
Figure 1.12. PCA Block Diagram
16-Bit Counter/Timer
Capture/Compare
Module 2
Crossbar
Port I/O
Rev. 1.4
C8051F120/1/2/3/4/5/6/7
Capture/Compare
Module 3
C8051F130/1/2/3
Capture/Compare
Module 4
Capture/Compare
Module 5
33
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